CHE350_Fall2011_Exam 1 Soln

CHE350_Fall2011_Exam 1 Soln - ehE 350 Fall 2011 Exam 1 (200...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ehE 350 Fall 2011 Exam 1 (200 points) (30 pts) 1. On the unit cells shown below, sketch the positions of the atoms in a (a) face centered cubic (fee), (b) body-centered cubic (bee) and (c) simple cubit unit cell (a) (to) (b) (to) z ) / .. / / .DO y / o / ' ~ / / x/ " z (c) (lo z y y , =- {)j1. o-wer: x/ ,,::: OYl-fq ce I =- ~'" (~r ofc wl"e (45 pts) 2. Show that packing fraction of spheres in an fee lattice is Ji7r/ 6 =0.74 . f - : : fJU.~~ frtlc-f~fJkI ~ F((. F t{(e _ - . - y. - x 1 ChE 350 Fall20ll Exam 1 (200 points) Name: fa I J ,~ (} J.'f. ) (45 pts) 3. The separation between lattice planes (hkl) is called the d-spacing, and for a cubic unit cell is related to the lattice parameter as: d= a .Jh2+k2+Z2 Show that in a fee crystal the d-spacing between (110) planes is equal to the nearest neighbor spacing between the atoms. J (I{,,,)) I z: m , "'"- jp f rb ", 9' Vevt ,0 r-fl"tt.vla.: ~ <1(/10) 1~-rli+O~ l T'- 1J~lAre~+lJel~~6or, 2 R frO#L ~(he Jt,o/)L ~;." @ (/0) d~/V- >rl( dnj-...
View Full Document

This note was uploaded on 12/13/2011 for the course CHE 350 taught by Professor Sanchez during the Spring '08 term at University of Texas at Austin.

Page1 / 3

CHE350_Fall2011_Exam 1 Soln - ehE 350 Fall 2011 Exam 1 (200...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online